Event: Division 4

Opponent Rating Result
Jeremy JA Turner 1405 1 - 0
Rahulan Chandrasekaran 1550 ½ - ½
Sanzhar Baisakalov 1794 0 - 1
David C Helsby 1751 ½ - ½
Joseph B Farrell 1626 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1545 = (8126 + 400 * (1 - 2)) / 5)

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